Really? I'm pretty sure all the GreetingCardPro-type stuff is available on iPads, and its a better device for banking/investment stuff (because GreetingCardPro can't fuck with it). I was thinking more like QuickBooks or a custom business app.
Big Assumptions on your part. Do you think 'grandparents' also don't use iphones and androids? If anything more people are more familiar with this interface than Windows/Mac WIMP.
Anyway, their Windows laptop got all sorts of shit "side-loaded" (and I have a benign theory about this happened), and put them on iPad like 15 years ago. You can object to the closed system, but zero tech support calls for me.